.CSZ file extension

This is the basic program to work with .CSZ extension

The Core Media Player

The Core Media Player The Core Media file

The Core Media Player (formerly PowerDivX) provides a flexible and intuitive interfaces for organizing and playing audio and video files. It supports Winamp 2.xx VIS and DSP Plugins as well as full XML integration between our Playlist and Media Manager... (more)

The program works with the following extensions: mp3, wma, mpp, wmv, avi, mkv, au, mp2, ogg, ogm, mpa, ape, mpe, mpc, mac, mpg, mp+, wav, lst, wax, aif, asf, npl, wvx, csz, cda, pls, m1v, m2v, mka, m3u, mid, mp1, mpeg, tcmp, divx and audiocd

.CSZ extension is also supported by the following programs:

Screen Calendar

Screen Calendar Screen Calendar Skin

Screen Calendar allows you to put a PIM like calendar and on your desktop.